Adapter for practicing firing



March 8, 1938. E. VON LATSCHER-LATKA El AL 2,110,509

I ADAPTER FOR PRACTICING FIRING Filed Nov. 28, 1936 fietented Mar, 8, 1938 I ADAPTER FOB. PRACTICING FIRING Eric von Latscher-Latka and Adam Schmidt,

Vienna, Austria, assignors to Oesterreichische -Aga-Werke Aktien-Gesellschaft, Vienna, Austria, a company of Austria Application November 28, 1936, Serial No. 113,216 In Austria December 4, 1935 19 Claims. (01. 124-11) The present invention relates to apparatus adapted to be substituted in place cf the breech of a gun so as to provide the firearm with means for practice firing wherein the conditions of carpneumatic bullet supply device attached to the gun shown in Fig. 1. n

The breech may be removed from the light machine gun and in place thereof is fitted the artridge firing are produced. 4 rangement for practice firing by means of com- 5 The known arrangements for practice firing pressed air. The piston I, as shown in Fig. 1 is by means of compressed air possess disadvantages provided with a handle 2. The piston l 'correin that they "do not truly reproduce the steps taksponding to the breech-head, is secured; to a ing place when actually shooting. In other words disc 3 which is connected with the bolt 4 the prior practice devices lack means for producby means of a bayonet catch. The bolt 4 10 ing the shocks caused by the explosion of the is subjected to the action of a spring I2, so that cartridges and the sequence of the recoil. it forces forwardly the piston l against the stop An object of the present'invention is to avoid of the trigger A piston rod 5 is secured bya pin the disadvantages above mentioned and to con- 6 to the pisto i. The piston rod 5 carries a construct the apparatus for practice firing in such trol piston which extends forwardly and termi- 15 a manner that the operations of the apparatus mates in the form of a rod I. The control piston correspond exactly to the steps taking place when consists. of two members 8 and 8', which slide in actually shooting. a cylinder l2 and are connected with one an:

The essential feature of the present invention other by a reduced middle portion 9. A channel consistsdn the provision of a piston, which is ID passes through the rod 1, branches and termi- 20 movably arranged in a cylinder and subjected to nates at the circumference of the middle portion the action of a spring preferably a run-out spring 9. A slide II is mounted for longitudinal moveso as 'to slide forward in the direction of firing. ment on the red 'I and guided within the cylinder The piston controls a compressed air inlet toi2. 'Ihe/irod I is provided with shoulders I3, I,

wards the end of. its forward movement and the which are disposed at both sidesof the slide II, so 25 piston is'thrown back by means of compressed that the reciprocating rod I is adapted to coair against the action of the force of the spring. operate with and thus move the slide II to and The piston thus performs a movement like that fro within the cylinder 12. A spring 2| arranged of a fired gun breech producing a shock similar in a circumferential groove of the control slide to the recoil of a discharged gun. ll, bears against the inner face of the cylinder 30 Another feature of the arrangement accordl2, and serves for retarding the movement of the ing to the present invention resides in the fact control slide II. The control slide It is provided that the piston controls practically simultaneouswith bores 22, in order to balance the air pres- 1y but independently from one another the comsure within the cylinder compartments at both pressed air inlets of the conduit leading to the sides of the control slide. 1 35. barrel as well as to the cylinder, so that the bul- A pin l5 passes through the cylinder i2 and let'is fired and the recoil takes place practically extends towards the control piston. This pin [5 simultaneously. is mounted for longitudinal movement and serves The compressed air, present in the compressed I for operating a valve Hi to control communica- 40 air control compartments, may be used also for tion between a compressed air tank and com- 40 supplying bullets to the charge chamber of the pressed air channels located within the The arm. Thus by supplying such air to a prefer pin I5 is arranged in such a manner, that it proably screw-shaped bullet-magazine and allowjects towards and rests on the reduced part 9 of ing the' same to operate intermittently against the piston, when the .piston assembly is in the the bullets the projectiles may be movedinto rearmost position of rest. The valve it controls 45 the charge chamber. the communication between the compressed air Exemplary apparatus for carrying out the preschannel and an annular groove ll of the cylinent invention is illustrated by way of example on der l2, which is provided with two ports l8 and the aicompanying sheet of drawings in which l9, leading to the interior of the cylinder. A

Fig. 1 shows in longitudinal section alight macompressed. air outlet 20 is arranged near the 50 chine gun provided with an arrangement for forward end of-the cylinder 12. practice firing and with a pneumatic bullet sup- The shoulder M of the rod I constitutes the ply device. Fig. 2 shows partly in longitudinal end of a cylindric enlargement 23, which slides section the compressed air control and the trigin a sleeve. In front of the enlargement 23, the get-mechanism. Figs. 3, 4 and 5 are views of the diameter of the rod 1' is reduced to the caliber of an auxiliary barrel :5. The auxiliary barrel is inserted in a barrel 24 when practice firing, so

that the end of the rod may enter into the auxiliary barrel. The bullet feed channel 43 of the projectile feeder terminates near the rear end of the auxiliary barrel 25 and the end of the reciprocating rod I slides past the inlet end of the feed channel, thereby pushing a bullet into the. auxiliary barrel.

The finger-engaging portion of the trigger shown in Fig. 2 is provided with two abutments 28, 23 mounted on a slide 3| 3 which is adapted to be moved in a longitudinal direction against the action of a spring 33. The movement of the slide 3| is limited by the extension 32, when pressure is applied to the abutment 28. However if the trigger is pressed by means of the abutment-'- 23, the extension 32 is shifted in such a manner as to permit movement of the slide 3| over a longer distance. A double armed lever 33 is pivotally secured to the slide 3|. The. forward end 34 of the lever 33 operates a push rod 35 and the latter co-operates with levers 33, 31. The lever 31 is provided with a projection 33 for looking the piston I connected with the piston 3.1 During the firing of the first shot the lever 33 is forced downwardly, so that its end 34 is moved out of engagement with the push rod 35, whereby the projection 38 is moved 'again in engagement with and locks the piston I immediately after the firstshot has been fired. If the trigger is forced back by means of the abutment 23, the

slide, 3| is pushed farther backward than the movement obtained by pressure on the abutment 28. Thus the lever 33 remains in engagement with the push rod 35 during the firing of the first shot but slides from the abutment 34 on to the abutment face 39 of the lever 33 and the triggr remains in its disengaged position, so that not only individual shots are delivered, but automatic firing takes place.

If the arrangement for practice firing is fitted into the gun, the lever 33 is frequently operated by the cylinder of the control piston in accordance with the construction of the gun and therefore it cannot be directly influenced by the moving parts of the discharge device (see Fig. 2). Therefore in cases of this sort, the compressed air'present in the cylinder I2 is utilized for setting the lever 33 for automatic firing. The compressed air is efiective at the moment when the piston 8 reaches its rearmost position by operating the lever 33 by means of a ball 40 and thereby effecting the adjustment from single firing to automatic firing. The ball 40 is arranged with a relatively tight fit in a transverse channel 4i of the cylinder l2 and the ball 43 is movable in said channel. The ball is secured in the channel 4| against removal by an'outer plate spring 42 and a constriction of the channel towards the inside.

In the new arrangement for practice firing, the projectiles are supplied solely by compressed air,-by allowing the air present in the control compartments of the discharge device to operate the bullet or projectile magazine. The latter is F in the form of a screw-wound pipe 43, one end of which extends intoa block 44 adapted to be secured to the gun, while the'other end thereof carries a socket 45 for the attachment of a charging chute 43 (Fig. 5). The socket 45 is adapted to be nofmally closed by a cap 41. The block 44 is secured to the machine gun by means ofa screw 4.8. A channel 43 establishes communicatioiibetween the interior of the piston-cylinder communicates by way of a pipe 53 with the end of. the projectile channel, which is located farther away from the gun-barrel. The channel 43 com- ,municates by way of a channel 5| with the projectile channel just behind the entry of the same into the'charging compartment. 52 designates a copper ring for tightly packing the compressed air channel. The charging chute 43 is'V-shaped in cross section and terminates in a charging pipe 53 which is constructed in such a manner, that the charging 'chute is slightly inclined towards the projectile channel. The charging pipe and the projectile channel are interconnected without any projecting edges or appreciable bends, so that the projectiles or bullets may move from the charging channel into the projectile magazine without meeting with any obstruction. 1

The new arrangement operates in the following mannerz-The breech is removed from the machine gun and in its place the discharge and control arrangement is inserted in simple manner. The auxiliary barrel and the bullet or projectile feeder shown in Figs. 3 and 4 are attached to the gun. Thegun is then ready for firing. If the trigger is pulled, the spring I2v becomes operative and causes the piston l to jump for-' ward thereby carrying with it the control piston 3, 8" and 3. When the piston-part 8 strikes against the pin I5, the compressed air valve I3 is opened and during its continued forward movement, the shoulder l3 of the control piston strikes against and moves forward the slide ll. During this operation, a bullet ,resting in front of the outlet of the bullet feeder is engaged by the rod I and pushed into the auxiliary barrel 25. If the control piston moves forward sufliciently far the rear edge of the piston-part 3' passes beyond'the ports l8 of the compressed air channel ll, compressed air will pass into the annular space around the piston-part 9 and through the channel l0 and to the bullet, which is hurled out by the force of the compressed air. Simultaneously or practically simultaneously, the ports I9 are uncovered by the slide I I, so that the compressed air enters the compartment in front of the control piston and forces the piston backward against the action of the spring". During the backward movement, the control piston again air passes through the latter and into the bullet feeder. Usually only a very weak force of the compressed air is necessary for operating the pneumatic bullet feeder and therefore itmay be advisable to provide outlets 23 in addition to the channels 45, or a vent may be arranged at any convenient'point in the compressed air' supply line leading to the bullet-channel.

The channel 43 is uncovered by the slide I l immediately after the rod I hasclea'red the outlet of the bullet feeder leading into the charging compartment. At this moment, the expanding air flows from the cylinder l2 into the bullet-magazine and through the channel 58. The air acts from the rear against the bullet and in view of the clearances between the bullets and the wallof the channel 13, the expanding air flows forward through the rows of bullets and also directly influences the bullets near the charging space. The expanding air also passes through the channel 5| and into the bullet magazine, thereby increasing the direct influence of the bullets near the charging space and slackening the bullets in the bullet channel. The bullets are thus prevented froni jamming. In order that the compressedair entering the bullet magazine will not leavethe gun by way of the barrel and thereby carry with it any bullet, a, vent H is provided at the point where the bullet magazine passes into.

the charging space. Thus directly after the return[ movement of the charging rod, a bullet is forced toward the charging space and remains there until the beginning of the next discharging peration.

This arrangement for practice firing by means 2 of .compressed air may be used either in pneumatic guns or it may be inserted in existing fire arms. In the case last mentioned, if small changes are made for adapting the practice arrangement to the space at disposal-in and to the operating members of the breech of the arm, the practice arrangement may be inserted without any reconstruction of the arm. Examples of such guns are machine guns of all calibers, light machine guns, machine pistols, semiand full automatic infantry guns, tank guns, tank defense and aircraft defense guns.

What we claim is 1. An adapter for practicing firing by means of compressed air from machine guns and other light guns and adapted for insertion in the gun in place of the breech, comprising a cylinder, 2. piston movably arranged in said cylinder, a spring pressing against said piston and having the tendency to force said pistonin the direction of fir- 4 ing, said cylinder having an inlet for the admission of compressed air into the cylinder arranged I in said cylinder near its forward end and controlled by said piston, said compressed air caus ing the backward movement of said piston against the action of said spring thereby producing a shock similar to the recoil of an actually firing gun.

2. An adapter for practicing firing by means of compressed air from machine guns and other 59 light guns and adapted for insertion in the gun in place of the breech, comprising a cylinder, a piston movably arranged in said cylinder, a spring pressing against said piston and having the tendency to force said piston in the direction of firing,

said cylinder having an inlet for the admission of compressed air into said cylinder arranged in said cylinder near its forward end, and a locking membercontrolled by said piston and controlling said inlet, said compressed air causing the back- 60' wardmovement of said piston thereby producing a shock similar to the recoil of an actually firing 3. Anladapter for practicing firing by means of compressed air from machine guns and other light guns and adapted for insertion in the gun in place of the breech, comprising a cylinder, a piston movably arranged in said cylinder, said piston having a compressed air channel partly passing through said piston and open at the forpistonhaving a compresse ton, said compressed air causing thebackward movement of said piston against the action of ency to force said piston in the direction of firing, a rod secured toandprojecting forwardly from said piston having a channel passing therethrough and partly through said piston, a slide arranged on said rod, stops on said piston and said rod limiting the movement of said slide on said rod, said cylinder having an inlet for the admission of compressed air'into said cylinder ar-' ranged in said cylinder and controlled by said slide, said compressed air causing the backward movement'of said piston thereby producing'a shock similar to the recoil of an actually firing gun.

5. An adapter for practicing firing by means of compressed air from machine guns and other light guns and adapted for insertion in the gun in place of the breech, comprising a cylinder, a piston movably arranged in said cylinder, said piston having a compressed air channel partly passing therethrough and open at the forwardcommunication between said air channel and the interior of the cylinder in front of said piston,

a slide arranged in said cylinder in front of said piston and controlling said inlet, a valve controlling the admission of compressed air to said air channel, and means co-operating with said valve and said piston in order to operate said valve by said piston, said compressed air causing the backward movement of said-piston therebyproducing a shock similar to the recoil of an actually firing gun.

6. An adapter for practicing firing by means of compressed air from machine guns and other light guns and adapted for insertion in the gun in. place of the breech, comprising a cylinder, a

piston movably arranged in said cylinder, said piston having a compressed air channel partly passing therethrough and open at the forward end of the piston, a spring pressing against said piston and having the tendency to force said piston in the direction of firing, said piston having an air channel arranged therearound, said cylinder having an inlet establishing communication between said air channel and the interior of the cylinder in front of said piston, a slide arranged in said-cylinder in front of said piston and controlling said inlet, a, valve controlling the admission of compressed air to said air channel, and means on said piston operating at first said valve and thereafter said slide, said compressed air' causing the backward movement of said piston thereby producing a shock similar to the recoil of an'actually firing gun.

7. An adapter for practicing firing by means of compressed air from machine guns and other light guns and adapted for insertion in the gun in place of the breech, comprising a cylinder, a piston movably arranged'in said cylinder, said passing therethrough and ope at the forward end of said piston, a'spring pressing against said piston and having the tendency to force said piston in the direction of firing, said cylinder having an air channel arranged therearound, a slide arranged in said cylinder in front of said piston,

said cylinder having an inlet therein controlled by said slide and establishing communication between said air channel around said cylinder and the interior of the cylinder in front of said piston,

said cylinder having a port controlled by said piston and establishing communication between said air channel around said cylinder and the compressed air channel passing through said piston, a valve controlling the admission of compressed air .to said air channel, and means cooperating with said valve and said piston in order to operate said valve by said piston, said compressed air causing the backward movement of said piston thereby producing a shock similar to the recoil of an actually 'firing gun.

8. An adapter for practicing firing by means of compressed air from machine guns and otherlight guns and adapted for insertion in the gun in 'place of the breech, comprising a cylinder, a piston movably arranged in saidcylinder, a spring pressing against said piston and having the tendency to.force said piston in the direction of firing, a rod secured to and projecting forwardly.

from said piston, said rod having a channel passa slide arranged on said rod, stops on said piston and said rod limiting the movement of said slide on said rod, said cylinder having an air channel therearound, said cylinder having an inlet therein controlled by said slide and establishing communication between said air channel aroundsaid cylinder and the interior of the cylinder in front of said piston, said cylinder having a port controlled by said piston and establishing communication between said air channel around said cylinder and the compressed air channel through said piston, a valve controlling the admission of compressed air to said air channel,

and means co-operating'withs'aid valve and said piston in order to operate said valve by said piston, said compressed air' causing the backward movement of said piston-thereby producing a shock similar to' the recoil of an actually firing ing an air channel arranged therearound, aslide arranged in said cylinder in front of said piston, said cylinder having an inlet therein controlled by said slide and establishing communication between said air channel around said cylinder and; the interior of the cylinder in'front' of said piston,

a bullet receptacle at the front part of the adapter, means establishing communicatio be-- tween the interior of the cylinder in front of said piston and said bullet receptacle, said cylinder having a port controlled by said piston and establishing communication between said airchanf nel around said-cylinder and the compressed air channel passing through said piston, a valve controlling the admission of compressed air to said air channel, and means co-operating with said ingtherethrough and partly, through said piston,

the admission of compressed air valve and said piston in order to operate said valve by said piston, said compressed air causing the backward movement of said piston thereby producing a shock similar to the recoil of an actually firing gun.

10. An adapter for practicing firing by means of compressed air from machine guns and other light guns and adapted for insertion in the gun in place of the breech, comprising apylinder, a piston movably arranged in said cylinder, a spring 10 pressing against said piston and having the tendency to force said piston in the direction of firing,a rod secured to and projecting forwardly from said piston, said rod having a channel pass-- ing therethrough and partly through said-pis- 1 ton, a slide arranged on said rod, a spring inserted in said slide and braking the movements thereof, stops on said piston and said rod limiting the movement of said slide on said rod, said cylinder having an inlet for the admission of com- 20 pressed air into said'cylinder and controlled by said slide, said compressed air causing the backward movement of said piston thereby producing a shock similar to the recall of an actually firing gun.

11. An adapter for practicing firing by means of compressed air from machine guns and other light guns and adapted for insertion in the gun in place of the breech, comprising a cylinder, a piston provided with a reduced middle portion movably arranged insaid cylinder, said piston having a compressed air channel therein beginning at said reduced middle portion and ending at the forward end of said piston, a spring Dressing against said piston in the direction of firing,

.-said cylinder having an air channel arranged therearound, slide arranged in said cylinder infront of d piston, saidcylinder having an inlet controlled by said slide and establishing communication between said air channel around said cylinder and the-interior of the cylinder in front of said piston, said cylinder having a'port therein controlled by said piston and establishing communication between said air channel around said cylinder and the compressed air channel passing through said piston, a valve controlling to said air channel, and means co-operating with said valve and said pistonjin order to operate said valve by said piston, saidcornpressed air causing the so backward movement of said piston thereby producing a shock similar to the'recoil of an actual- 12. Anadapter for practicing firingby means of compressed air from machine guns and other light guns and adapted, for insertion in the gun in place of,-the'breech, -comprising a cylinder, a piston movably arranged in said cylinder, a spring pressing against said piston and having the tendency to force said piston in the direction of fin ing, and said cylinder having an inlet forthe admission,- of compressed air into the cylinder arranged'in said cylindernear its forward end and controlled by, said plston, means connected with the trigger mechanism'and controlling the supply of compressed air, and a lever controlled by. said means and operatedv for single or automatic flring.-

' 13. An adapter for practicingfiri'ng by means of compressed air from machineguns and other 7 light guns and adapted for insertion in the -gun in place of the breech, comprising a cylinder, a piston movably arranged in said "cylinder, said piston having a compressed air channelpartly passing therethrough and open at the forward arranged in said cylinder in front of said piston,

said cylinder having an inlet controlled by said slide and establishing communication between said air channel around said cylinder and the interior of the cylinder in front of said piston, said cylinder having a port controlled by said piston and establishing communication between said air channel around said cylinder and the compressed air channel passing through said piston, a valve controlling the admission of compressed air to said channel, means co-operating with said valve and said piston in order to operate said valve by said piston, a bullet magazine attached to the gun and terminating in the gun-barrel, and a, duct controlled by said slide and establishing communication between'the interior of said cylinder and said bullet magazine.

14. An adapter for practicing firing by means of compressed air from machine guns and other light guns and adaptedfor insertion in the gun in place of the breech, comprising a cylinder, a piston movably arranged in said cylinder, said piston -having a compressed air channel partly passing therethrough and open at the forward,

end of said piston, a spring pressing against said piston and having the tendency to force said piston in the direction of firing, said cylinder having an air channel arranged therearound, a

slide arranged in said cylinder in front of said piston, said cylinder havingan inlet therein controlled by said slide and establishing communication between said air channel around said cylinder and the interior of the cylinder in front of said piston, said cylinder having a port controlled by said piston and establishing communication between said air channel around said cylinder and the compressed air channel passing through said piston, a valve controlling the admission of compressed air to said channel, means co-operating with said valve and said piston in order to operate said valve by said piston, a bullet magazine attached to the gun and terminating in the gunbarrel, two ducts controlled by said slide, one of said ducts establishing communication between the interior of said cylinder and the end of'the bullet magazine disposed remote from the bar-, rel of the gun, while the other duct establishes communication between the interior of said cylinder and the opposite end of the bullet magazine just behind the place where said bullet maga passing therethrough and open at the forward end of said piston, a spring pressing against said piston and having the tendency to force said piston in the direction of firing, said cylinder having an air channel arranged therearound, a slide arranged in said cylinder in front of said piston, said cylinder having an inlet therein controlled by said slide and establishing communication between said air channel around said cylinder and the interior of the cylinder in front of said piston, said cylinder having a port therein controlled by said piston and establishing communication between said air channel around said cylinder and the compressed air channel passing through said piston, a valve controlling the'admission of compressed air to said channel, means co-operating with said valve and said piston in order to operate said valve by said piston, a bullet magazine in the shape of a screw-wound tube attached to the gun and terminating in the gun-barrel, and a duct controlled by said slide and establishing communication between the interior of said cylinder and said bullet magazine.

16. An adapter for practicing firing by means of compressed air from machine guns and other light guns and adapted for insertion in the gun in place of the breech, comprising a cylinder, a piston movably arranged in said cylinder, said piston having a compressed air'channel partly passing therethrough and open at the Iforward end of said piston, a spring pressing against said piston and having the tendency to force said piston in the direction of firing, said cylinder having an air channel arranged therearound, a slide arranged in said cylinder in front of said piston, said cylinder having an inlet therein controlled by said slide and establishing, communication between said air channel around said cylinder and-the interior of the cylinder in front of said piston, said cylinder having a port therein controlled by said piston and establishing communication between said air channel around said cylinder and the compressed air channel passing through said piston,a valve controlling the admission ofcompressed air to said channel, means co-operating with said valve and said piston in order to operate said valve by said piston, a block fixed to the gun, a bullet magazine in the shape ofa screw-wound tube attached with one of its 7 ends to said block, a duct controlled by said slide and terminating in said block, and a pipe in communication with said duct and connected to the other end of said screw-wound tube for the supply of compressed air.

17. An adapter for practicing firing by means of compressed air from machine guns and other light guns and adapted for insertion in the gun in place of the breech, comprising a cylinder, a piston movably arranged in said cylinder, said piston having a compressed air channel partly passing therethrough and open at the forward end of said piston, a spring pressing against said piston and having the tendency to. force said piston in the direction of firing, said cylinder having an air channel arranged therearound, a slide arranged in said cylinder in front of said piston, said cylinder having an inlet therein controlled by said slide and establishing communication between said air channel around said cylinder and the interior of the cylinder in front of said piston, said cylinder having a port therein controlled by said piston and establishing communication between said air channel around said cylinder and the compressed air chamiel passing through said piston, a valve controlling the admission of compressed air to said channel, means co-operating with'said valve and said piston in order to operate said valve by said piston, a bullet magazine in the shape of a screw-wound tube attached to the gun and terminating in the gunbarrel, a screw cap closing the end of the bullet magazine which is remote from the barrel, and a duct controlled by said slide and establishing communication between the interior of said cylinder and said bullet magazine.

I 18. An adapter for practicing firing by means of compressed air from machine guns and other light guns and adapted for insertion in the gun in place of the breech, comprising a cylinder, a

' passing therethrough and open magazine attached arranged in said cylinder, said air channel partly at the forward end ofsaid piston, a spring pressing against said piston and having the tendency to force said piston in the direction of firing, said cylinder having an air channel arranged therearound, a slide arranged in'said cylinder in front of said piston, said cylinder having an inlet therein controlled by said slide and establishing communication between said air channel around said cylinder and the interior of the cylinder in front of said piston; said cylinder. having a port therein controlled by said piston and establishing communication between said air channel around said cylinder and the compressed air channel passing through said piston. a valve controlling the admission of compressed air to said channel, means cooperating with said valve and said piston in order to operate said valve by said piston, a bullet to the gun and terminating in the gun-barrel, a duct controlled by saidslide and establishing communication between the interior of said cylinder and said bullet magazine, and a charging chute placed on to the end of the bullet magazine which is remote from the gun-barrel.

'19. An adapter of compressed air from machine guns and other light guns and adapted for insertion in the gun in piston movably piston having a compressed for practicing flringby means said , cation between said air channel around said cylinder and the interior of the cylinder in front of said piston, said cylinder having a port therein controlled by said piston and establishing communication between said air channel around said cylinder and the compressed air channel passing through said piston, a valve controlling the admission of compressed air to said channel, means co-operating with said valve and said piston in order to operate said valve by said piston, a bullet magazine attached to the gun and terminating in the gun-barrel, a duct controlled by said slide and establishing communication between the interior of said cylinder and said bullet magazine, and a charging chute of V-shaped cross section placed on to the end of the bullet magazine which is remote from the gun-barrel.

ERIC vou LATSCHER-LATKA. ADAM SCHMIDT cylinder, a 

